#walllist {
  font-size: 120%;
  text-align: center;
  table-layout: fixed;
}

#walllist thead {
  position: sticky;
  top: 0;
}

#walllist td, #walllist th {
  border: 1px none;
  padding: 8px;
}

#walllist th {
  background-color: DarkSlateGrey;
  color: white;
}

#walllist tr.helleZeile {
  background-color: whitesmoke;
  color: black;
}

#walllist tr.dunkleZeile {
  background-color: lightgray;
  color: black;
}